Quote from Monsterball >>

((In the interests of increasing the pace of play, let's say the same marching order as earlier, but with Clara moving to the front and using her Light-spell empowered flashlight.))

 Clara leads the way climbing up the western escarpment. As she steps onto the level ledge between the two escarpments, it breaks underneath her weight and rubble starts to fall backward down the incline, threatening to take Clara with it. Make a DEX saving throw (with advantage if anyone tries to catch her).

Clara leads the way, clambering up the steep, western slope. Despite her dancer's feet, she occasionally loses her footing on the loose rubble scattered across the ground and practically needs to crawl on hands and knees at times. She steps out onto the ledge between the escarpments, and gasps as the ground suddenly gives way.

"Whoaaa! Watch out!" She calls out in a hushed voice, trying to skitter forward onto the other side without tumbling down the slope. 

Dexterity save: 18. Second roll if advantage: 14.

"Well it seems unlikely they dragged our pals that direction, perhaps we stick to the northern direction?" Herron holds his staff out cautiously to keep those behind him from continuing forward.

Clara manages to keep her feet and avoid hurting herself. Herron suggests backtracking and returning to the northern passage. As you all return to the passageway, you suddenly hear a rushing sound, and suddenly the stream, which had only been about two feet deep, surges to four or five feet deep as a huge torrent of water comes rushing down the passage from the north. 

Everyone make a DC 10 Dexterity saving throw to avoid being swept away by the water. If you fail that, make a DC 15 Strength save to try and hold on to something. If you fail both saves, you are swept back to the cavern entrance and take 4 bludgeoning damage!

Clara springs nimbly back across the now-collapsed ledge and retraces her steps at Herron's suggestion. She's in the process of dusting her colourful clothing off, when a deep, resonating rumble begins to build from the northern tunnel. At first it seems like distant thunder, then a heavy crashing that grows louder. 

"Does anyone else hear that noise?" She says, exchanging uneasy looks with her companions. "It sounds like... aagh!" 

The rest of her words are swallowed as she watches a wall of water bursting towards them - the erstwhile shallow stream transformed into a violent surge. With a bounce, a skip and a dive, Clara throws herself back into the western passage for cover, pressing herself tightly against the stone. The bard looks stunned as the sudden deluge flows through the cave and out the mouth through which the party just entered.

Dexterity save: 17

Herron's sudden jump at the sound of the rushing water (Dex save: 13). He even surprises himself by being able to avoid the brunt of the rushing water. With out much thought, he starts casting Prestidigitation to dry out newly water logged equipment. "Well that was unexpected."

Chretien starts at the incoming crash of water and attempts to brace himself. (Dex save: 5) He quickly loses his footing and reaches out desperately to attempt to grab onto something. (Strength: Nat 1 XD) Chretien is unable to fight the incoming flood and curses, his mouth filling with water as he does so. He attempts to protect his head as he's swept back and takes a moment to right himself, favoring his new injuries, before calling ahead to the others. "Are you two alright?" 

As he waits for a response, he'll attempt to search for another path forward to meet with his companions. Perception: 12

((To keep the game moving forward, I am going to roll for Ellora and Magnus))

Ellora Dex Save - 6 / Str Save - 20

Magnus Dex Save - 5 / Str Save - 11

 Magnus, Throg, and Chretien are swept off their feet by the surging tide. They are washed back toward the entrance of the cave and each take 4 bludgeoning damage in the process. Throg is knocked unconscious as he hits his head on a rock. After a few minutes, the surge starts to slacken and the stream slowly returns to a more manageable depth as the waters rush out of the cave system.

Clara and Herron manage to keep their feet. Ellora falls down but manages to hold onto the edge of the stream as it threatens to pull her away.

Chretien is able to lead Magnus back toward the rest of the party once the water dies down. Throg remains unconscious near the cave entrance. The water came from the north. The passage to the north heads under the foot bridge where Throg spotted a goblin earlier. 

 Do you continue to the north?

Herron once, Throg and the others are back on thier feet, will say there seems to be activity to the north and thinks that a good path to continue on.

OOC: Herron can heal Throg if no one else can but it's his last spell slot.